Owning an old-gaffer or not, 2015 is maybe the year to check the keel bolts.

Have a look hereunder this is a long cast iron keel "secured" by mean of seven long bolts. She is an old gaffer sailing a lot six months per year with passengers.
Some pieces of wood were rotten so we have had to remove the keel first prior to repair and or exchange the defective parts.

What a surprise! This is what we discovered.
- 2 bolts were in pretty good condition
- 3 bolts had only 1/3 of the original diameter
- 2 bolts were broken